OT - CRT's

I designed a vector character generator to upgrade the electronics on the AH130 gunship. It drove a CRT heads-up display for the pilot. The old electronics had an MTBF of 24 hours.

We did this:

simulated:

on a real CRT:

We sold some, but eventually they went LCD.

--

John Larkin         Highland Technology, Inc 

lunatic fringe electronics

Which brings up an interesting point: people order expensive custom SMA (or more exotic) hardline cables, change something, and then have no use for those cables. So they are cheap on ebay.

--

John Larkin         Highland Technology, Inc 
picosecond timing   precision measurement  

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com

is anyone regunning tubes now that hawkeye has gone?

NT

** There is no other kind and millions are made each year.

Playing fast and loose with the facts is Steve's middle name.

..... Phil

** Complete bollocks.

Triggered sweep scopes did not come into common use until the 1950s.

Lissajous figures were popular into the 1990s and beyond.

** Very useful when you need them.

** Typical bullshit laden Tim Williams post.

..... Phil

Yup. Most of my proto stuff comes from eBay. Folks like Belden and Alpha charge several times what you can get equivalent wire and cable for on eBay. The retail price of RG-402 semi-rigid has gone through the roof, so eBay is a practical necessity.

Cheers

Phil Hobbs

No, not true; Earth's magnetic field, with a CRT that can be oriented in a variety of directions, you get good results for magnitude and excellent results for direction. Few compasses do as well.

The electron beam is a very fine field probe. I'm sensing that you aren't keeping an open mind on the 'measure anything' issue.

It says no longer available :-(

Gosh that is expensive.

Phil Allison wrote in news:2900c5cd-4b1e- snipped-for-privacy@googlegroups.com:

I like that answer. There is no other kind. Any signal being amplified, regardless of the waveform is essentially analog.

The gov boys use complex waveforms created in software defined radio waveforms so the same amplifier can be used for multiple communications links.

whit3rd wrote in news: snipped-for-privacy@googlegroups.com:

It is a known fact that an (some) upright video game screen gets messed up depending on what direction the machine gets set up in. The colors shift as does one of the frame scan characteristics. Turn the machine and all goes away. The techs had to be careful not to recalibrate the color outputs on the displays thinking they were off, only to find out that he was working on the machine with it turned the wrong way with respect to the Earth's magnetic field.

Does anyone use a CRT as a compass? That would be weird.

Fluxgates make really good compasses.

--

John Larkin         Highland Technology, Inc 
picosecond timing   precision measurement  

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com

On Thursday, 23 May 2019 00:40:16 UTC+1, snipped-for-privacy@decadence.org wr ote:

It certainly was a weird claim.

Ah. So when a class D amp feeds its signal to the output pair to amplify it that's analogue amplification. And when an H bridge drives a motor with a rectangular wave, that's also analogue. And when a comparator amplifies a s ensor's output, ditto. Now I understand. Than you for clarifying.

NT

it that's analogue amplification. And when an H bridge drives a motor with a rectangular wave, that's also analogue. And when a comparator amplifies a sensor's output, ditto. Now I understand. Than you for clarifying.

** Usual Nutcase Thornton smartarse bullshit that conveys NO information.

Yawnnnnnnnnnn....

.... Phil

snipped-for-privacy@gmail.com wrote in news: snipped-for-privacy@googlegroups.com:

How do you think an energized coil used for magnetic force application "looks" at an incoming signal with a fast, high leading edge slew rate?

How do you think the amp pushing it operates?

y it that's analogue amplification. And when an H bridge drives a motor wit h a rectangular wave, that's also analogue. And when a comparator amplifies a sensor's output, ditto. Now I understand. Than you for clarifying.

He is a reliable source of patronising non-information. When he does stoop to providing actual information he's less reliable.

--
Bill Sloman, Sydney

** LOL !!

..... Phil

Also a reduction due to reduced exposure to ozone by not being near CRTs, also radon isn't everywhere, moslty it's over granite.

--
  When I tried casting out nines I made a hash of it.

y it that's analogue amplification. And when an H bridge drives a motor wit h a rectangular wave, that's also analogue. And when a comparator amplifies a sensor's output, ditto. Now I understand. Than you for clarifying.

whoosh

now there's irony